Znát následující graf a související tabulku patří k základním vědomostem elektronika. A nikdy není bezdůvodné si ji připomenout, případně aktualizovat si její znalost.



Device Families:
  • TTL (74xx) True TTL
    74L         Low power  
    74S         Schottky    
    74H         High speed
    74LS        Low power - Schottky                
    74AS        Advanced - Schottky        
    74ALS       Advanced - Low power - Schottky                
    74F(AST)    Fast - (Advanced - Schottky)        
    74C         CMOS...................check Vcc levels    
    74HC (U)    High speed - CMOS (Unbuffered output)        
    74HCT       High speed - CMOS - TTL inputs            
    74AHC       Advanced - High speed - CMOS                
    74AHCT      Advanced - High speed - CMOS - TTL inputs  
    74FCT (-A)  Fast - CMOS - TTL inputs (speed variations)
    74FCT (-T, -AT) Fast - CMOS - TTL inputs (speed variations)
    74AC        Advanced - CMOS                            
    74ACT       Advanced - CMOS - TTL inputs              
    74FACT      AC, ACT (Q) series                      
    74ACQ       Advanced - CMOS - Quiet outputs                
    74ACTQ      Advanced - CMOS - TTL inputs - Quiet outputs


  • Bus Driver Families
    74ABT       Advanced - BiCMOS - Technology                
    74ABTE      ABT - Enhanced Transceiver Logic                
    74ABTH      Advanced - BiCMOS - Technology - bus Hold  
    74BCT       BiCMOS - TTL inputs                        
    74BTL       Backplane - Transceiver - Logic            
    74GTL       Gunning - Transceiver - Logic              
    74GTLP      GTL Plus


  • Low Voltage Families
    74ALB       Advanced - Low Voltage - BiCMOS                
    74LV(U)     Low - Voltage (Unbuffered output)          
    74LVC(R)(U) LV - CMOS (damping Resistor)(Unbuffered output)
    74LVCH      Low - Voltage - CMOS - bus Hold                
    74ALVC      Advanced - Low - Voltage - CMOS                
    74LVT(R)(U) LV - TTL  (damping Resistor(Unbuffered output)  
    74LVTZ      Low - Voltage - TTL - High Impedance power-up  
    74ALVC(R)   ALV - CMOS (bus Hold) (damping Resistor)    
    74ALVCH     Advanced - Low - Voltage - CMOS - bus Hold  
    74LCX       LV - CMOS (operates with 3v & 5v supplies)  
    74VCX       LV - CMOS (operates with 1.8v & 3.6v supplies


  • 4000 True CMOS (non-TTL levels)

  • ECL Device Families:
    MEC I      8nS*                
    MEC II     2nS*                    
    MEC III    (16XX)  1nS*  .......* = Rise & Fall Times  
    101xx      100 series 10K ECL, 3.5nS*              
    102xx      200 series 10K ECL, 2.5nS*              
    108xx      800 series 10K ECL, voltage compensated, 3.5nS*
    10Hxxx     10K - High speed, voltage compensated, 1.8nS*
    10Exxx     10K - ECLinPS, voltage compensated, 800pS*  
    100xxx     100K, temperature compensated                  
    100Hxxx    100K - High speed, temperature compensated  
    100Exxx    100K - ECLinPS, temp, voltage comp., 800pS*